logo

CuriousTab

CuriousTab

Discussion


Home C++ Programming OOPS Concepts Comments

  • Question
  • Why reference is not same as a pointer?


  • Options
  • A. A reference can never be null.
  • B. A reference once established cannot be changed.
  • C. Reference doesn't need an explicit dereferencing mechanism.
  • D. All of the above.

  • Correct Answer
  • All of the above. 


  • OOPS Concepts problems


    Search Results


    • 1. What is correct about the static data member of a class?

    • Options
    • A. A static member function can access only static data members of a class.
    • B. A static data member is shared among all the object of the class.
    • C. A static data member can be accessed directly from main().
    • D. Both A and B.
    • Discuss
    • 2. What will happen if a class is not having any name?

    • Options
    • A. It cannot have a destructor.
    • B. It cannot have a constructor.
    • C. It is not allowed.
    • D. Both A and B.
    • Discuss
    • 3. Which of the following keyword is used to overload an operator?

    • Options
    • A. overload
    • B. operator
    • C. friend
    • D. override
    • Discuss
    • 4. Which inheritance type is used in the class given below?
      class A : public X, public Y
      {}

    • Options
    • A. Multilevel inheritance
    • B. Multiple inheritance
    • C. Hybrid inheritance
    • D. Hierarchical Inheritance
    • Discuss
    • 5. Which of the following is an invalid visibility label while inheriting a class?

    • Options
    • A. public
    • B. private
    • C. protected
    • D. friend
    • Discuss
    • 6. Which of the following statements is correct?

    • Options
    • A. Base class pointer cannot point to derived class.
    • B. Derived class pointer cannot point to base class.
    • C. Pointer to derived class cannot be created.
    • D. Pointer to base class cannot be created.
    • Discuss
    • 7. Which of the following statements is correct?

      1. We can return a global variable by reference.
      2. We cannot return a local variable by reference.

    • Options
    • A. Only 1 is correct.
    • B. Only 2 is correct.
    • C. Both 1 and 2 are correct.
    • D. Both 1 and 2 are incorrect.
    • Discuss
    • 8. Which of the following statements is correct?

      1. Once the variable and the reference are linked they are tied together.
      2. Once the reference of a variable is declared another reference of that variable is not allowed.

    • Options
    • A. Only 1 is correct.
    • B. Only 2 is correct.
    • C. Both 1 and 2 are correct.
    • D. Both 1 and 2 are incorrect.
    • Discuss
    • 9. Reference is like a _____.

    • Options
    • A. Pointer
    • B. Structure
    • C. Macro
    • D. Enum
    • Discuss
    • 10. Which of the following statement is correct about the references?

    • Options
    • A. A reference must always be initialized within functions.
    • B. A reference must always be initialized outside all functions.
    • C. A reference must always be initialized.
    • D. Both A and C.
    • Discuss


    Comments

    There are no comments.

Enter a new Comment